{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,27]],"date-time":"2026-03-27T11:58:18Z","timestamp":1774612698943,"version":"3.50.1"},"reference-count":13,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2024,7,20]],"date-time":"2024-07-20T00:00:00Z","timestamp":1721433600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Photochem &amp; Photobiology"],"published-print":{"date-parts":[[2025,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>In 2015, a study showed that Krypton\u2010Chloride (KrCl) excimer lamps could induce erythema and basal layer DNA damage in human skin. Later studies found that filtering out longer wavelength emissions from these lamps resulted in no acute skin effects. However, there is a limited understanding of how much to reduce unwanted emissions and which wavelengths are important. Accurate spectral irradiance data is therefore crucial for safety, as variance in optical filtering significantly affects the weighted irradiance of a lamp. To simplify the risk assessment process for Far\u2010UVC lamps, we highlight the usefulness of the lamp exposure limit (<jats:italic>H<\/jats:italic><jats:sub>LEL<\/jats:sub>) and present this in the context of spectral emission data for 14 commercially available Far\u2010UVC lamps. Our results demonstrate that relying solely on a radiometric measurement and a single\u2010wavelength exposure limit at 222\u2009nm could lead to over\u2010exposure. The <jats:italic>H<\/jats:italic><jats:sub>LEL<\/jats:sub> is a practical metric which can be utilized to determine the exposure time before reaching the exposure limit. It can also be used in the determination of the minimum ceiling height for compliance with standards like UL 8802. Manufacturers are urged to provide <jats:italic>H<\/jats:italic><jats:sub>LEL<\/jats:sub> for their products; installers should adhere to <jats:italic>H<\/jats:italic><jats:sub>LEL<\/jats:sub>; and standards and regulatory bodies should insist on this information in new guidance.<\/jats:p>","DOI":"10.1111\/php.14005","type":"journal-article","created":{"date-parts":[[2024,7,20]],"date-time":"2024-07-20T07:04:30Z","timestamp":1721459070000},"page":"270-274","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Far\u2010UVC: The impact of optical filters on real\u2010world deployment"],"prefix":"10.1111","volume":"101","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7824-5580","authenticated-orcid":false,"given":"Ewan","family":"Eadie","sequence":"first","affiliation":[{"name":"NHS Tayside, Photobiology Unit Ninewells Hospital and Medical School  Dundee UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Paul","family":"O'Mahoney","sequence":"additional","affiliation":[{"name":"Optical Radiation Effects Group, Harwell Campus UK Health Security Agency  Oxford UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sally H.","family":"Ibbotson","sequence":"additional","affiliation":[{"name":"Photobiology Unit, Ninewells Hospital and Medical School University of Dundee  Dundee UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"C. Cameron","family":"Miller","sequence":"additional","affiliation":[{"name":"National Institute of Standards and Technology  Gaithersburg Maryland USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7310-3375","authenticated-orcid":false,"given":"Kenneth","family":"Wood","sequence":"additional","affiliation":[{"name":"SUPA, School of Physics &amp; Astronomy University of St Andrews  St Andrews UK"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2024,7,20]]},"reference":[{"key":"e_1_2_3_2_1","doi-asserted-by":"publisher","DOI":"10.1111\/phpp.12156"},{"key":"e_1_2_3_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/php.13385"},{"key":"e_1_2_3_4_1","doi-asserted-by":"publisher","DOI":"10.1111\/bjd.19816"},{"key":"e_1_2_3_5_1","doi-asserted-by":"publisher","DOI":"10.1111\/php.13383"},{"key":"e_1_2_3_6_1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0267957"},{"key":"e_1_2_3_7_1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0235948"},{"key":"e_1_2_3_8_1","doi-asserted-by":"publisher","DOI":"10.1111\/php.13602"},{"key":"e_1_2_3_9_1","unstructured":"American Congress of Governmental Industrial Hygienists (ACGIH).2022 Threshold Limit Values(TLVs\u00ae)and Biological Exposure Indices(BEIs\u00ae).2022."},{"key":"e_1_2_3_10_1","doi-asserted-by":"publisher","DOI":"10.1097\/00004032-200408000-00006"},{"key":"e_1_2_3_11_1","doi-asserted-by":"publisher","DOI":"10.1080\/10643389.2022.2084315"},{"key":"e_1_2_3_12_1","unstructured":"Government of the United Kingdom.Statutory Instrument 2010 No. 1140. Health and Safety \u2013 Control of Artificial Optical Radiation at Work Regulations 2010.2010."},{"key":"e_1_2_3_13_1","unstructured":"UL Standards and Engagement.Ultraviolet (UV) Germicidal Equipment and Systems.2023Standard 8802. Edition 1."},{"key":"e_1_2_3_14_1","unstructured":"International Organization for Standardization and the International Electrotechnical Commission.ISO\/IEC 17025:2017 General requirements for the competence of testing and calibration laboratories.2017Edition 3."}],"container-title":["Photochemistry and Photobiology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/php.14005","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,3,18]],"date-time":"2025-03-18T03:19:58Z","timestamp":1742267998000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/php.14005"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,7,20]]},"references-count":13,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2025,3]]}},"alternative-id":["10.1111\/php.14005"],"URL":"https:\/\/doi.org\/10.1111\/php.14005","archive":["Portico"],"relation":{},"ISSN":["0031-8655","1751-1097"],"issn-type":[{"value":"0031-8655","type":"print"},{"value":"1751-1097","type":"electronic"}],"subject":[],"published":{"date-parts":[[2024,7,20]]},"assertion":[{"value":"2023-11-24","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2024-07-08","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2024-07-20","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}